*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font: 14px Helvetica Neue,Helvetica,PingFang SC,Tahoma,Arial,sans-serif;
}

.div-top{
    width: 100vw;
    height: 100vh;
    background-color: #f3f3f4;
}

.nav-top{
    height: 40px;
    background-color: white;
    display: flex;
    align-items:center;
    justify-content: space-between;
}
.nav-top-title{
    border: 1px solid black;
    width: 180px;
    height: 100%;
    display: flex;
    align-items:center;
    justify-content: center;
}
.nav-top-h2{
    color: #1E9FFF;
    font-size: 21px;
}
.hideMenu {
    margin-top: 0px;
    width: 30px;
    height: 28px;
    margin-left: 10px;
    padding: 4px 0px;
    background-color: #1e9fff;
}